Mobile communication system, base station apparatus, and mobile station apparatus

ABSTRACT

A mobile communication system in which a mobile station apparatus transmits, to a base station apparatus, uplink data using a physical uplink shared channel assigned by an uplink data transmission permission signal, wherein the base station apparatus: transmits, to the mobile station apparatus, a radio resource control signal including information for specifying a physical format in transmitting reception quality information together with uplink data; and transmits, to the mobile station apparatus, the uplink data transmission permission signal including a transmission instruction of reception quality information, and wherein the mobile station apparatus transmits, to the base station apparatus, reception quality information together with uplink data using the physical uplink shared channel according to information for specifying the physical format in case that a transmission instruction of the reception quality information is included in the uplink data transmission permission signal.

This application is a Divisional of co-pending application Ser. No.12/555,555 filed on Sep. 8, 2009, which is a Divisional of co-pendingapplication Ser. No. 12/529,152 filed on Aug. 28, 2009 and for whichpriority is claimed under 35 U.S.C. §120, Application No. JP2007-152560filed Jun. 8, 2007 is the national phase of PCT InternationalApplication No. PCT/2008/060453 filed on Jun. 6, 2008 under 35 U.S.C.§371. The entire contents of each of the above-identified applicationsare hereby incorporated by reference.

TECHNICAL FIELD

The present invention relates to a mobile station system in which amobile station apparatus measures reception quality of a signal receivedfrom a base station apparatus to transmit reception quality informationto the base station apparatuses, and relates to a base station apparatusand a mobile station apparatus which are applied to such a mobilecommunication system.

BACKGROUND ART

In recent years, in mobile communication systems, there is increaseddemand of data communication and there are proposed various technologiesin which high spectrum efficiency responding to an increase oftransmission data following the increased demand. As one of technologiesfor enhancing the spectrum efficiency, there is OFDMA (OrthogonalFrequency Division Multiple Access). This OFDMA relates to a technologyof modulation method in performing communication by using the samefrequency at all cells within communication area composed of cells andcan realize high speed data communication.

In scheduling of transmission packets in the OFDMA system, there isknown a method in which mobile station apparatuses transmit, to the basestation apparatus, CQI (Channel Quality Indicator) which is informationindicating reception quality of a downlink state for subcarriers inwideband, and the base station apparatus performs scheduling of thepacket on the basis of the CQI of subcarriers in wideband transmittedfrom the each mobile station apparatuses.

Moreover, in scheduling of transmission packets in an OFDM (OrthogonalFrequency Division Multiplexing) system using plural subcarriers, thereis also known a technology in which mobile station apparatuses evaluateeach channel states of a downlink (frequency characteristics, i.e.,characteristics of transmission loss, etc., depending on frequency) andtransmit information obtained by quantizing each channel states to thebase station apparatus, and the base station apparatus determinessubcarriers assigned to each mobile station apparatuses on the basis ofthe transmitted information (Patent Literature 1).

FIG. 18 is a view for illustrating a conventional communication methodbetween the base station apparatus and the mobile station apparatus.Having received downlink information of the downlink used for receptionquality measurement from the base station apparatus, the mobile stationapparatus measures the reception quality of each channel on the basis ofthe downlink information to create a channel profile of propagationpath.

The channel profile the mobile station apparatus has created istransmitted from the mobile station apparatus to the base stationapparatus as reception quality information using an uplink. The basestation apparatus performs processing of adaptive modulation and codingor frequency selective scheduling on a signal to be transmitted from thebase station apparatus to the mobile station apparatus on the base ofthe reception quality information.

In regard to transmission of the reception quality information to thebase station apparatus by the mobile station apparatus, in evolution ofthe third-generation radio access (Evolved Universal Terrestrial RadioAccess) being studied by the 3GPP (3rd Generation Partnership Project)which is the International Standardization Project, it is studied thatthe reception quality information is transmitted from the mobile stationapparatus to the base station apparatus using a dedicated uplink controlchannel (hereinafter referred to as PUCCH (Physical Uplink ControlChannel), or an uplink data channel (hereinafter refereed to as PUSCH(Physical Uplink Shared Channel).

For example, in the non Patent Literature 1, there is proposed a methodto transmit, in transmitting the reception quality information from themobile station apparatus to the base station apparatus, the receptionquality information using the PUCCH or the PUSCH depending on a kind ofservices different in required the reception quality information.

-   Patent Literature 1: Japanese Patent Application Laid Open No.    2005-130491-   Non-Patent literature 1: “CQI handling during DRX”, 3GPP, TSG RAN    WG2 Meeting #58, R2-071901, May 2007

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention

However, in the prior arts, there are no practical description of whatkind of control information the base station apparatus use to controlthe mobile station apparatus in transmitting, on the PUCCH or the PUSCH,the reception quality information from the mobile station apparatus tothe base station apparatus, and what kind of information exchangebetween the base station apparatus and the mobile station apparatus sothat the reception quality information is transmitted.

In transmission of the reception quality information, for example, thereare instances where the base station apparatus needs to transmit, to themobile station apparatus, a large information amount such as thereception quality information with respect to all channels obtained bydividing a transmission frequency band every predetermined regions inorder to perform suitable frequency selective scheduling.

On the other hand, for example, there are also cases where the basestation apparatus requires the mobile station apparatus to transmit thereception quality information of small information amount such asaverage value of wideband in order to perform adaptive modulation andcoding, and the size of information amount of the reception qualityinformation to be transmitted from the mobile station apparatus to thebase station apparatus has a wide range.

In addition, there is a demand such that the base station apparatuscontrols the size and the transmission frequency of the receptionquality information. The base station apparatus should control the sizeand the transmission frequency of the transmitted reception qualityinformation in consideration of an uplink resource within a cell thebase station apparatus itself controls. If large-sized reception qualityinformation is transmitted at high frequency based on the decision ofeach mobile station apparatus, the uplink resource within the cell runsout. On the other hand, if small-sized reception quality information istransmitted at low frequency, the uplink resource will be wastefullyused.

Namely, in transmission of the reception quality information from themobile station apparatus to the base station apparatus, it is veryimportant to control the mobile station apparatus using what kind ofcontrol information from the base station apparatus, and to transmit thereception quality information by performing what kind of informationexchange between the base station apparatus and the mobile stationapparatus, and it is required to employ an efficient transmissioncontrol method in consideration of the information amount and thetransmission frequency of the reception quality information to betransmitted.

The present invention is made in view of such circumstances, and itsobject is to provide a mobile communication system, a base stationapparatus and a mobile station apparatus which can realize the efficienttransmission control of the reception quality information which canflexibly treat the information amount and the transmission frequency ofthe reception quality information.

Means for Solving the Problems

(1) In order to attain the above mention objects, the following meanswere carried out in the present invention. Namely, a mobilecommunication system according to the present invention is directed to amobile communication system in which a mobile station apparatustransmits, to a base station apparatus, reception quality informationindicating quality of a signal received from said base stationapparatus, wherein said base station apparatus transmits, to said mobilestation apparatus, an uplink data transmission permission signalincluding a transmission instruction of reception quality information,and wherein said mobile station apparatus transmits, to said basestation apparatus, reception quality information in case that atransmission instruction of said reception quality information isincluded in said uplink data transmission permission signal.

(2) Moreover, in the mobile communication system of the presentinvention, said mobile station apparatus transmits, to said base stationapparatus, said reception quality information using an uplink datachannel.

(3) Further, in the mobile communication system of the presentinvention, said mobile station apparatus transmits, to said base stationapparatus, said reception quality information together with uplink data.

(4) Further, mobile communication system of the present invention isdirected to a mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus, wherein said base station apparatus: transmits, tosaid mobile station apparatus, a radio resource control signal includinga transmission instruction for periodically transmitting first receptionquality information; and transmits, to said mobile station apparatus, anuplink data transmission permission signal including a transmissioninstruction of second reception quality information, and wherein saidmobile station apparatus: periodically transmits, to said base stationapparatus, said first reception quality information according to saidradio resource control signal including a transmission instruction forperiodically transmitting said first reception quality information; andtransmits, to said base station apparatus, said second reception qualityinformation in case that a transmission instruction of said receptionquality information is included in said uplink data transmissionpermission signal.

(5) Further, the mobile communication system is directed to a mobilecommunication system in which a mobile station apparatus transmits, to abase station apparatus, reception quality information indicating qualityof a signal received from said base station apparatus, wherein said basestation apparatus: transmits, to said mobile station apparatus, a radioresource control signal including a transmission instruction forperiodically transmitting first reception quality information; andtransmits, to said mobile station apparatus, an uplink data transmissionpermission signal including a transmission instruction of secondreception quality information, and wherein said mobile stationapparatus: periodically transmits, to said base station apparatus, saidfirst reception quality information according to said radio resourcecontrol signal including a transmission instruction for periodicallytransmitting said first reception quality information; transmits, tosaid base station, said second reception quality information apparatusin case that receiving said uplink data transmission permission signalincluding a transmission instruction of said second reception qualityinformation; and transmits said second reception quality information incase that transmission of said first reception quality information andtransmission of said second reception quality information would occur atthe same time.

(6) Further, the mobile communication system of the present invention isdirected to a mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus, wherein said base station apparatus: transmits, tosaid mobile station apparatus, a radio resource control signal includinga transmission instruction for periodically transmitting first receptionquality information; and transmits an uplink data transmissionpermission signal to said mobile station apparatus, and wherein saidmobile station apparatus: periodically transmits said first receptionquality information using an uplink control channel according to saidradio resource control signal including a transmission instruction forperiodically transmitting said first reception quality information tosaid base station apparatus; transmits said second reception qualityinformation using an uplink data channel in case that a transmissioninstruction of reception quality information is included in said uplinkdata transmission permission signal; and transmits said first receptionquality information using an uplink data channel in case thattransmission of said first reception quality information andtransmission using an uplink data channel according to an uplink datatransmission permission signal which does not include a transmissioninstruction of said reception quality information would occur at thesame time.

(7) Further, in the mobile communication system of the presentinvention, said first reception quality information transmitted usingsaid uplink data channel has a form in which reception qualityinformation is transmitted using an uplink control channel.

(8) The mobile communication system is directed to a mobilecommunication system in which a mobile station apparatus transmits, to abase station apparatus, reception quality information indicating qualityof a signal received from said base station apparatus, wherein said basestation apparatus transmits, to said mobile station apparatus, saiduplink data transmission permission signal including a transmissioninstruction of reception quality information, and wherein said mobilestation apparatus transmits, to said base station apparatus, receptionquality information using said uplink data channel by modulating theinformation with a modulation scheme corresponding to a modulationscheme of uplink data specified by said uplink data transmissionpermission signal in case that a transmission instruction of saidreception quality information is included in said uplink datatransmission permission signal.

(9) Further, the mobile communication system of the present invention isdirected to a mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus, wherein said base station apparatus transmits, tosaid mobile station apparatus, said uplink data transmission permissionsignal including a transmission instruction of reception qualityinformation, and wherein said mobile station apparatus transmits, tosaid base station apparatus, reception quality information using saiduplink data channel by coding the information with a coding schemecorresponding to a coding scheme of uplink data specified by said uplinkdata transmission permission signal in case that a transmissioninstruction of said reception quality information is included in saiduplink data transmission permission signal.

(10) Further, the mobile communication system of the present inventionis directed to a mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus, wherein said base station apparatus transmits, tosaid mobile station apparatus, an uplink data transmission permissionsignal including a transmission instruction of reception qualityinformation, and wherein said mobile station apparatus transmits, tosaid base station apparatus, reception quality information together withuplink data by assigning the reception quality information in a lowfrequency band of uplink data channel in case that a transmissioninstruction of said reception quality information is included in saiduplink data transmission permission signal.

(11) Further, the mobile communication system of the present inventionis directed to A mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus, wherein said base station apparatus: transmits, tosaid mobile station apparatus, a radio resource control signal includinginformation for specifying a physical format in transmitting receptionquality information together with uplink data; and transmits, to saidmobile station apparatus, an uplink data transmission permission signalincluding a transmission instruction of reception quality information,and wherein said mobile station apparatus transmits, to said basestation apparatus, reception quality information together with uplinkdata according to information for specifying a physical format intransmitting reception quality information together with uplink dataincluded in said radio resource control signal in case that atransmission instruction of said reception quality information isincluded in said uplink data transmission permission signal.

(12) Further, in the mobile communication system of the presentinvention, information for specifying said physical format isinformation for determining ratio of reception quality informationtransmitted together with said uplink data.

(13) Further, in the mobile communication system of the presentinvention, information for specifying said physical format isinformation for specifying a modulation scheme of reception qualityinformation.

(14) Further, in the mobile communication system of the presentinvention, information for specifying said physical format isinformation for specifying a coding scheme of reception qualityinformation.

(15) Further, the mobile communication system of the present inventionis directed to a mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus, wherein said base station apparatus transmits, tosaid mobile station apparatus, an uplink data transmission permissionsignal, and wherein said mobile station apparatus: periodicallytransmits, to said base station apparatus, first reception qualityinformation even in case that a transmission instruction of receptionquality information is not included in said uplink data transmissionpermission signal; transmits, to said base station apparatus, secondreception quality information in case that a transmission instruction ofreception quality information is included in said uplink datatransmission permission signal; and transmits said first receptionquality information and second reception quality information indifferent physical formats.

(16) Further, in the mobile communication system of the presentinvention, said first reception quality information and second receptionquality information have ratios with respect to uplink data which aredifferent from each other.

(17) Further, in the mobile communication system of the presentinvention, said first reception quality information and second receptionquality information have modulation schemes different from each other.

(18) Further, in the mobile communication system of the presentinvention, said first reception quality information and second receptionquality information have coding schemes different from each other.

(19) Further, the mobile communication system of the present inventionis directed to a mobile communication system in which a mobile stationapparatus transmits, to a base station apparatus, reception qualityinformation indicating quality of a signal received from said basestation apparatus: wherein said base station apparatus transmits, tosaid mobile station apparatus, an uplink data transmission permissionsignal; wherein said mobile station apparatus: periodically transmits,to said base station apparatus, first reception quality information evenin case that a transmission instruction of reception quality informationis not included in said uplink data transmission permission signal; andtransmits, to said base station apparatus, second reception qualityinformation in case that a transmission instruction of reception qualityinformation is included in said uplink data transmission permissionsignal; and wherein information amount of said second reception qualityinformation is larger than that of said first reception qualityinformation.

(20) Further, a base station apparatus of the present invention isdirected to a base station apparatus in a mobile communication system inwhich a mobile station apparatus transmits, to said base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said base station apparatuscomprising, means for transmitting a transmission instruction of saidreception quality information included in an uplink data transmissionpermission signal to said mobile station apparatus.

(21) Further, the base station apparatus of the present invention isdirected to a base station apparatus in a mobile communication system inwhich a mobile station apparatus transmits, to said base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said base station apparatuscomprising: means for transmitting a radio resource control signalincluding a transmission instruction for periodically transmitting firstreception quality information to said mobile station apparatus; andmeans for transmitting a transmission instruction of second receptionquality information included in an uplink data transmission permissionsignal to said mobile station apparatus.

(22) Further, the base station apparatus of the present invention isdirected to a base station apparatus in a mobile communication system inwhich a mobile station apparatus transmits, to a base station apparatus,reception quality information indicating quality of a signal receivedfrom said base station apparatus, comprising: means for transmitting, tosaid mobile station apparatus, a radio resource control signal includinginformation for specifying a physical format in transmitting saidreception quality information together with uplink data; and means fortransmitting, to said mobile station apparatus, a transmissioninstruction of said reception quality information included in an uplinkdata transmission permission signal.

(23) Further, in the base station apparatus of the present invention,information for specifying said physical format is information fordetermining ratio of reception quality information transmitted togetherwith said uplink data.

(24) Further, in the base station apparatus of the present invention,information for specifying said physical format is information forspecifying a modulation scheme of reception quality information.

(25) Further, in the base station apparatus of the present invention,information for specifying said physical format is information forspecifying a coding scheme of reception quality information.

(26) Further, the mobile station apparatus of the present invention isdirected to a mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving an uplink data transmission permissionsignal from said base station apparatus; and means for transmittingreception quality information to said base station apparatus in casethat a transmission instruction of reception quality information isincluded in said uplink data transmission permission signal.

(27) Further, the mobile station apparatus of the present invention isdirected to a mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving a radio resource control signalincluding a transmission instruction for periodically transmitting firstreception quality information from said base station apparatus; meansfor receiving an uplink data transmission permission signal from saidbase station apparatus; means for periodically transmitting said firstreception quality information to said base station apparatus accordingto said radio resource control signal including a transmissioninstruction for periodically transmitting first reception qualityinformation; and means for transmitting second reception qualityinformation to said base station apparatus in case that a transmissioninstruction of reception quality information is included in said uplinkdata transmission permission signal.

(28) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving a radio resource control signalincluding a transmission instruction for periodically transmitting firstreception quality information from said base station apparatus; meansfor receiving an uplink data transmission permission signal from saidbase station apparatus; means for periodically transmitting said firstreception quality information to said base station apparatus accordingto said radio resource control signal including a transmissioninstruction for periodically transmitting said first reception qualityinformation; means for transmitting said second reception qualityinformation to said base station apparatus in case that receiving anuplink data transmission permission signal including a transmissioninstruction of said second reception quality information; and means fortransmitting said second reception quality information to said basestation apparatus in case that transmission of said first receptionquality information and transmission of said second reception qualityinformation would occur at the same time.

(29) Further, the mobile station apparatus of the present invention isdirected to a mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising; means for receiving a radio resource control signalincluding a transmission instruction for periodically transmitting firstreception quality information from said base station apparatus; meansfor receiving an uplink data transmission permission signal from saidbase station apparatus; means for periodically transmitting said firstreception quality information using an uplink control channel to saidbase station apparatus according to said radio resource control signalincluding a transmission instruction for periodically transmitting saidfirst reception quality information; means for transmitting secondreception quality information using an uplink data channel to said basestation apparatus in case that a transmission instruction of receptionquality information is included in said uplink data transmissionpermission signal, and means for transmitting said first receptionquality information using an uplink data channel in case thattransmission of said first reception quality information andtransmission using an uplink data channel according to an uplink datatransmission permission signal which does not include a transmissioninstruction of said reception quality information would occur at thesame time.

(30) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving an uplink data transmission permissionsignal from said base station apparatus; means for transmittingreception quality information by modulating the information with amodulation scheme corresponding to a modulation scheme of uplink dataspecified by said uplink data transmission permission signal in casethat a transmission instruction of said reception quality information isincluded in said uplink data transmission permission signal.

(31) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving an uplink data transmission permissionsignal from said base station apparatus; and means for transmittingreception quality information by coding the information with a codingscheme corresponding to a coding scheme of uplink data specified by saiduplink data transmission permission signal in case that a transmissioninstruction of said reception quality information is included in saiduplink data transmission permission signal.

(32) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receives an uplink data transmission permissionsignal from said base station apparatus; and means for transmitsreception quality information together with uplink data using saiduplink data channel by arranging the information in a low frequency bandof uplink data channel assigned by said uplink data transmissionpermission signal in case that a transmission instruction of saidreception quality information is included in said uplink datatransmission permission signal.

(33) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving, from said base station apparatus, aradio resource control signal including information for specifying aphysical format in transmitting reception quality information togetherwith uplink data; and means for transmitting, to said base stationapparatus, reception quality information together with uplink dataaccording to information for specifying a physical format intransmitting said reception quality information together with uplinkdata included in said radio resource control signal

(34) Further, in the mobile station apparatus of the present invention,information for specifying said physical format is information fordetermining ratio of reception quality information transmitted togetherwith said uplink data.

(35) Further, in the mobile station apparatus of the present invention,information for specifying said physical format is information forspecifying a modulation scheme of reception quality information.

(36) Further, in the mobile station apparatus of the present invention,information for specifying a physical format is information forspecifying a coding scheme of reception quality information.

(37) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving an uplink data transmission permissionsignal from said base station apparatus; means for periodicallytransmitting first reception quality information to said base stationapparatus even in case that a transmission instruction of receptionquality information is not included in said uplink data transmissionpermission signal; and means for transmitting second reception qualityinformation to said base station apparatus in case that a transmissioninstruction of reception quality information is included in said uplinkdata transmission permission signal, wherein said first receptionquality information and said second reception quality information aretransmitted in different physical formats.

(38) Further, in the mobile station apparatus of the present invention,said first reception quality information and said second receptionquality information have ratios with respect to uplink data differentfrom each other.

(39) Further, in the mobile station apparatus of the present invention,said first reception quality information and said second receptionquality information are modulated by different modulation schemes.

(40) Further, in the mobile station apparatus of the present invention,said first reception quality information and said second receptionquality information are coded by different coding schemes.

(41) Further, the mobile station apparatus of the present invention isdirected to A mobile station apparatus in a mobile communication systemin which said mobile station apparatus transmits, to a base stationapparatus, reception quality information indicating quality of a signalreceived from said base station apparatus, said mobile station apparatuscomprising: means for receiving an uplink data transmission permissionsignal from said base station apparatus; means for periodicallytransmitting first reception quality information to said base stationapparatus even in case that a transmission instruction of receptionquality information is not included in said uplink data transmissionpermission signal; and means for transmitting second reception qualityinformation to said base station apparatus incase that a transmissioninstruction of reception quality information is included in said uplinkdata transmission permission signal, wherein information amount of saidsecond reception quality information is larger than that of firstreception quality information.

Advantage Effect of the Invention

According to the present invention, the base station apparatus cancontrol the transmission frequency of the reception quality information.In addition, it is possible to perform the transmission control of thereception quality information in consideration of the uplink resourcewithin a cell.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram showing a schematic configuration of a basestation apparatus according to a first embodiment of the presentinvention.

FIG. 2 is a block diagram showing a schematic configuration of a mobilestation apparatus according to the first embodiment of the presentinvention.

FIG. 3 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form in the first embodimentaccording to the present invention.

FIG. 4 is a view showing transmission form when the mobile stationapparatus simultaneously transmits the uplink data and the receptionquality information.

FIG. 5 is a view showing content and form transmitted in the slot in thefirst embodiment according the present invention.

FIG. 6 is a sequence chart showing the operation of the first embodimentaccording to the present invention.

FIG. 7 is a view showing content and form transmitted in the slot when aphysical format for simultaneous transmission is specified by RRCsignaling from the base station apparatus to the mobile stationapparatus in the first embodiment of the present invention.

FIG. 8 is a sequence chart of operation when a physical format forsimultaneous transmission is specified by RRC signaling from the basestation apparatus to the mobile station apparatus in the firstembodiment of the present invention.

FIG. 9 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form in a second embodimentaccording to the present invention.

FIG. 10 is a view showing content and form transmitted in the slot inthe second embodiment according to the present invention.

FIG. 11 is a sequence chart showing the operation of the secondembodiment according to the present invention.

FIG. 12 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form in a third embodimentaccording to the present invention.

FIG. 13 is a view showing content and form transmitted in the slot inthe third embodiment according to the present invention.

FIG. 14 is a sequence chart showing the operation of the thirdembodiment according to the present invention.

FIG. 15 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form in a fourth embodimentaccording to the present invention.

FIG. 16 is a view showing content and form transmitted in the slot inthe fourth embodiment according to the present invention.

FIG. 17 is a sequence chart showing the operation of the fourthembodiment according to the present invention.

FIG. 18 is a view for explaining a communication method between the basestation apparatus and the mobile station apparatus.

DESCRIPTION OF REFERENCE NUMERALS

-   100 base station apparatus-   101 data control unit-   102 modulation encoding unit-   103 mapping unit-   104 IFFT unit-   105 radio transmission unit-   106 radio reception unit-   107 FFT unit-   108 demodulation decoding unit-   109 data extracting unit-   110 scheduler unit-   111 transmission information control unit-   111 a modulation and coding control unit-   111 b frequency selective scheduler unit-   112 antenna-   200 mobile station apparatus-   201 data control unit-   202 modulation encoding unit-   203 mapping unit-   204 IFFT unit-   205 radio transmission unit-   206 radio reception unit-   207 FFT unit-   208 demodulation decoding unit-   209 data extracting unit-   210 reception quality information control unit-   210 a reception quality information generating unit-   210 b reception quality measurement unit-   211 antenna

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment

First of all, a mobile communication system according to a firstembodiment of the present invention will be described. This mobilecommunication system is composed of a base station apparatus and mobilestation apparatuses. FIG. 1 is a block diagram showing a schematicconfiguration of the base station apparatus according to the firstembodiment of the present invention. A base station apparatus 100comprises a data control unit 101, a modulation encoding unit 102, amapping unit 103, an Inverse Fast Fourier Transform (IFFT) unit 104, aradio transmission unit 105, radio reception unit 106, a Fast FourierTransform (FFT) unit 107, a demodulation decoding unit 108, a dataextracting unit 109, a scheduler unit 110, a transmission informationcontrol unit 111 and an antenna 112. The transmission informationcontrol unit 111 includes a modulation and coding control unit 111 a,and a frequency selective scheduler unit 111 b.

In the base station apparatus 100, the data control unit 101 receivestransmission data and control data which are transmitted to the eachmobile station apparatuses and sequentially transmits respective data tothe mobile station apparatuses according to instruction from thescheduler unit 110. The modulation encoding unit 102 performs modulationprocessing and error correction coding processing on a signal outputfrom the data control unit 101 on the basis of modulation scheme andcoding rate determined by the modulation code control unit 111 a tooutput the respective data to the mapping unit 103. The mapping unit 103performs mapping of data output from the modulation encoding unit 102onto respective subcarriers on the basis of frequency selectivescheduling information output from the frequency selective schedulerunit 111 b to output the mapped data to the Inverse Fast FourierTransform unit 104.

The Inverse Fast Fourier Transform unit 104 performs processing ofInverse Fast Fourier Transform on data output from the mapping unit 103,converts the data thus processed into a base band digital signal of timeseries to output the digital signal thus provided, and outputs theconverted data to the radio transmission unit 105. A signal output fromthe Inverse Fast Fourier Transform unit 104 is subjected to digitalanalog conversion at the radio transmission unit 105, up-converted intoa signal having frequency suitable for transmission, and thentransmitted to the respective mobile station apparatuses through theantenna 112.

The scheduler unit 110 performs scheduling of downlink and scheduling ofuplink on the basis of control information that each mobile stationapparatuses can use, such as resource region, intermittenttransmitting/receiving cycle, transmission data channel format andbuffer state. The modulation and coding control unit 111 a determinesmodulation scheme and coding rate to be applied to respective data onthe basis of reception quality information transmitted from the mobilestation apparatus to output them to the modulation encoding unit 102.The frequency selective scheduler unit 111 b performs processing offrequency selective scheduling to be applied to respective data on thebasis of reception quality information transmitted from the mobilestation apparatus to output the result to the mapping unit 103.

FIG. 2 is a block diagram showing a schematic configuration of themobile station apparatus of the first embodiment of present invention. Amobile station apparatus 200 comprises, a data control unit 201, amodulation encoding unit 202, a mapping unit 203, an Inverse FastFourier Transform (IFFT) unit 204, a radio transmission unit 205, aradio reception unit 206, a Fast Fourier Transform (FFT) unit 207, ademodulation decoding unit 208, a data extracting unit 209, a receptionquality information control unit 210, and an antenna 211. The receptionquality information control unit 210 includes a reception qualityinformation generating unit 210 a, and a reception quality measurementunit 210 b.

In the mobile station apparatus 200, the data control unit 201 receivestransmission data and control data to be transmitted to the base stationapparatus, and sequentially transmits respective data to the basestation apparatus. The modulation encoding unit 202 performs modulationprocessing and error correction coding processing on a signal outputfrom the data control unit 201 to output respective data to the mappingunit 203. The mapping unit 203 performs mapping of data output from themodulation encoding unit 202 onto the respective sub carriers to outputthe mapped data to the Inverse Fast Fourier Transform unit 204.

The Inverse Fast Fourier Transform unit 204 performs processing ofInverse Fast Fourier Transform on a symbol sequence output from themapping unit 203 to convert it into a time-series baseband digitalsignal, and outputs thus converted signal to the radio transmission unit205. The output signal from the Inverse Fast Fourier Transform unit 204is subjected to digital analog conversion at the radio transmission unit205 and up-converted into a signal having a frequency suitable fortransmission. Thereafter, the signal thus obtained is transmitted to thebase station apparatus through the antenna 211.

The reception quality measurement unit 210 b measures reception qualityof a signal received from the base station apparatus. The receptionquality information generating unit 210 a generates reception qualityinformation transmitted to the base station apparatus on the basis ofinformation measured by the reception quality measurement unit 210 b.

FIG. 3 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form. FIG. 3 shows, as anexample, the operation from #slot1 to #slot24. The mobile stationapparatus transmits data using PUSCH according to resource assignmentindicated by a downlink control channel (referred to as PDCCH (PhysicalDownlink Control Channel)) from the base station apparatus. Namely, thisdownlink control channel PDCCH is a signal for permitting datatransmission in the uplink (hereinafter referred to as “L1/L2 grant”meaning uplink data transmission permission signal).

The operation of the base station apparatus and the mobile stationapparatus at #slot2 in FIG. 3 will be described. The base stationapparatus which has determined to instruct the mobile station apparatusto transmit the reception quality information transmits the L1/L2 grant(uplink data transmission permission signal) which includes simultaneoustransmission permission information for giving an instruction tosimultaneously transmit the uplink data and the reception qualityinformation. The mobile station apparatus having received the L1/L2grant including the simultaneous transmission permission informationsimultaneously transmits, to the base station apparatus, the uplink dataand the reception quality information as indicated by slanting lineattached rectangular shape of FIG. 3. It is shown that at #slot2, fromthe base station apparatus, the L1/L2 grant including the simultaneoustransmission permission information is transmitted using the PDCCH at atiming for controlling #slot2 to the mobile station apparatus, and themobile station apparatus having received the signal simultaneouslytransmits, to the base station apparatus, the uplink data and thereception quality information.

Further, at #slot3, from the base station apparatus, the L1/L2 grantwhich does not include the simultaneous transmission permissioninformation is transmitted to the mobile station apparatus, and themobile station apparatus having received the signal transmits, to thebase station apparatus, the uplink data using the PUSCH in a physicalformat which does not include the reception quality information, asindicated by a white rectangle. FIG. 3 similarly shows that the L1/L2grant which includes the simultaneous transmission permissioninformation is transmitted from the base station apparatus at #slot9 and#slot20, and the mobile station apparatus having received the signalsimultaneously transmits the uplink data and the reception qualityinformation.

FIG. 4 is a view showing transmission form when the mobile stationapparatus simultaneously transmits the uplink data and the receptionquality information. FIG. 4 shows, as an example, two physical formats(transmission form 1 and transmission form 2). Data transmitted from themobile station apparatus to the base station apparatus is represented by14 OFDM symbols, and there are arranged, in these 14 OFDM symbols, knownreference symbols (pilot signal which will be refereed to as RShereinafter) used for propagation path estimation for performing datademodulation and the reception quality information and the uplink datahaving the numbers different from each other in the transmission forms 1and the transmission form 2.

In the transmission form 1, there are arranged the reception qualityinformation at the 2nd, 6-th, 9-th, and 13-th OFDM symbols and theuplink data at 3-rd, 4-th, 7-th, 10-th, 11-th and 14-th OFDM symbols. Inthe transmission form 2, there are arranged the reception qualityinformation at 2nd, 4-th, 6-th, 9-th, 11-th and 13-th OFDM symbols andthe uplink data at 3-rd, 7-th, 10-th and 14-th OFDM symbols.

The L1/L2 grant including the simultaneous transmission permissioninformation is transmitted from the base station apparatus. The mobilestation apparatus having received the signal simultaneously transmits,to the base station apparatus, the uplink data and the reception qualityinformation in transmission form as indicated by the transmission form 1or the transmission form 2.

The base station apparatus can specify by a RRC signaling (radioresource control signal) the physical format of the uplink data and thereception quality information the mobile station apparatussimultaneously transmits. For example, the base station apparatus setsratio of the uplink data and the reception quality information for eachOFDM symbol unit, and makes a setting in detail of the transmission form1 or the transmission form 2 etc. For example, for transmission data of14 OFDM symbols, there may be employed an approach to transmitinformation that the reception quality information is included in 4 OFDMsymbols, or information that the uplink data is included in 6 OFDMsymbols. Further, there may be employed an approach to simply notifytransmission form selected from transmission forms determined inadvance. In addition, there may be employed an approach to specify, inadvance by the RRC signaling, a modulation scheme and a coding schemefor coding the reception quality information.

Further, arrangement of the RS, the uplink data and the receptionquality information is changed in the time axis direction (14 OFDM)between the transmission forms 1 and the transmission forms 2 in FIG. 4,but such arrangement may be changed with respect to the frequency axisdirection. In addition such arrangement may be automatically changeddepending on the size of resource of PUSCH assigned by the L1/L2 grant.For example, only the resource unit (minimum unit of time frequencyblock of PUSCH) arranged in a low frequency band can transmit thereception quality information, and the resource unit arranged in theremaining high frequency band can transmit only the uplink data. Also amodulation scheme and a coding scheme for coding the reception qualityinformation may be changed according to a modulation scheme and a codingscheme of PUSCH specified by the L1/L2 grant.

The mobile station apparatus stores the physical format specified by theRRC signaling from the base station apparatus. In case that the L1/L2grant including the simultaneous transmission permission signal istransmitted from the base station apparatus, the mobile stationapparatus simultaneously transmits the uplink data and the receptionquality information in the physical format (e.g., format such that 4OFDM symbols are used for the reception quality information and 6 OFDMsymbols are used for the uplink data as indicated by the transmissionform 1 in FIG. 4).

Here, there may be employed as information included in the RRC signalingwith respect to the physical format for simultaneous transmission, anyinformation such that the mobile station apparatus determines the ratioin simultaneously transmitting the uplink data and the reception qualityinformation, such as, for example index given to plural kinds ofphysical format determined in advance, the number of OFDM symbols inwhich the uplink data is included (e.g., 6 OFDM for the uplink data in14 OFDM), or the number of OFDM symbols in which the reception qualityinformation is included (e.g., 4 OFDM for the reception qualityinformation in 14 OFDM) etc.

Further, while two kinds of forms as shown in FIG. 4 as described as anexample of transmission form, there may be employed any arrangementother than the above as arrangement of the RS, the uplink data and thereception quality information. In addition, there may be includedinformation, e.g., ACK/NACK signal other than the RS, the uplink dataand the reception quality information within OFDM signal to betransmitted.

FIG. 5 is a view showing content and form to be transmitted in the slotin the first embodiment according to the present invention. FIG. 6 is asequence chart showing the operation of the first embodiment accordingto the present invention. In this example, for clarifying, there areshown slots and the sequence corresponding to #slot1 to #slot12 in FIG.3. In addition, the uplink may be referred to as “uplink” and thedownlink may be referred to as “downlink” hereinafter.

In FIG. 5 and FIG. 6, at #slot2, the base station apparatus transmits,to the mobile station apparatus, the L1/L2 grant including thesimultaneous transmission permission information (step S1). The mobilestation apparatus having received the signal simultaneously transmits,to the base station apparatus, the uplink data and the reception qualityinformation (step S2). Also at #slot9, similar processing is performed(step S7, S8). At #slot3, the base station apparatus transmits, to themobile station apparatus, the L1/L2 grant which does not include thesimultaneous transmission permission information (step S3). The mobilestation apparatus having received the signal transmits the uplink datain the physical format which does not include the reception qualityinformation (step S4). Also at #slot4, #slot11, and #slot12, similarprocessing is performed (steps S5, S6, S9, S10, S11 and S12).

FIG. 7 is a view showing content and form to be transmitted in the slotwhen the physical format for simultaneous transmission is specified bythe RRC signaling from the base station apparatus to the mobile stationapparatus in the first embodiment of the present invention. Moreover,FIG. 8 is a sequence chart showing the operation when the physicalformat for simultaneous transmission is specified by the RRC signalingfrom the base station apparatus to the mobile station apparatus in thefirst embodiment of the present invention. The embodiment shown in FIG.7 and FIG. 8 differs from the case shown in FIGS. 5 and 6 in that theRRC signaling for specifying the physical format for simultaneoustransmission is transmitted from the base station apparatus to themobile station apparatus at #slot1 and #slot8.

In FIG. 7 and FIG. 8, at #slot1, the base station apparatus transmits,to the mobile station apparatus, the RRC signaling for specifying thephysical format for simultaneous transmission (step S21). In thisexample, it is assumed that the transmission form 1 in FIG. 4 isspecified by the RRC signaling. The mobile station apparatus stores thephysical format for simultaneous transmission (the transmission form 1).At #slot2, the base station apparatus transmits, to the mobile stationapparatus, the L1/L2 grant including the simultaneous transmissionpermission signal (step S22). The mobile station apparatus havingreceived the signal transmits, to the base station apparatus, the uplinkdata and the reception quality information in the stored transmissionform 1 (step S23).

Next, the base station apparatus transmits, to the mobile stationapparatus, the L1/L2 grant which does not include the simultaneoustransmission permission signal at #slot3 (step 24). The mobile stationapparatus transmits, to the base station apparatus, the uplink data(step S25). Also at #slot4, #slot6, #slot11 and #slot12, similarprocessing is performed (step S26, S27, S28, S29 and S33 to S36).

At #slot8, the base station apparatus transmits, to the mobile stationapparatus, the RRC signaling including specification of the physicalformat for simultaneous transmission (step S30). Here, it is assumedthat the transform form 2 in FIG. 4 is specified by the RRC signaling.The mobile station apparatus stores the physical format for simultaneoustransmission (the transmission form 2). At #slot9, the base stationapparatus transmits, to the mobile station apparatus, the L1/L2 grantincluding the simultaneous transmission permission signal (step S31).The mobile station apparatus having received the signal transmits, tothe base station apparatus, the uplink data and the reception qualityinformation in the stored transmission form 2 (step S32).

As described above, according to the first embodiment of the presentinvention, the base station apparatus transmits the L1/L2 grantincluding the simultaneous transmission permission information forpermitting simultaneous transmission of the uplink data and thereception quality information, the mobile station apparatus havingreceived the signal simultaneously transmits the uplink data and thereception quality information, and whereby the base station apparatuscan control the transmission frequency of the reception qualityinformation, thus making it possible to perform the transmission controlof the reception quality information in consideration of the uplinkresource within the cell.

Moreover, since the uplink data and the reception quality informationcan be simultaneously transmitted, it is possible to reduce wasteful useof the resource of the L1/L2 grant. Namely, when a transmissioninstruction of the reception quality information is given at a fixedtiming using the radio resource control signal (RRC signaling) from thebase station apparatus to the mobile station apparatus, if there is aneed to give a transmission instruction of the reception qualityinformation dynamically using the uplink data transmission permissionsignal, it is required to give an instruction at which timing thereception quality information is to be transmitted, using the uplinkdata transmission permission signal from the base station apparatus tothe mobile station apparatus. According to the present invention, sincethe uplink data transmission permission signal including thesimultaneous transmission permission information for instructing themobile station apparatus to simultaneously transmit the receptionquality information and the uplink data is transmitted to the mobilestation apparatus, wasteful use of the resource of the uplink datatransmission permission signal is reduced in the downlink, and therebythe resource can be effectively utilized.

Further, the base station apparatus transmits the RRC signaling forspecifying the physical format for simultaneous transmission insimultaneous transmitting the uplink data and the reception qualityinformation, and thereby the transmission control to flexibly treat theinformation amount of the reception quality information transmitted fromthe mobile station apparatus can be performed.

Second Embodiment

FIG. 9 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form in the second embodimentaccording to the present invention. FIG. 9 shows, as an example, theoperation from #slot1 to #slot24.

First, the base station apparatus transmits the RRC signaling whichincludes resource assignment and transmission interval when the mobilestation apparatus transmits the reception quality information using thePUCCH. In general, since the resource region assigned as the PUCCH issmaller than the resource region assigned as the PUSCH, the size ofinformation amount to be transmitted becomes small. Namely, thereception quality information the mobile station apparatus transmitsusing the PUCCH is the reception quality information having smallinformation amount, and the reception quality information the mobilestation apparatus transmits using the PUSCH is the reception qualityinformation having large information amount.

The operation at #slot2 will now be described. The mobile stationapparatus in which the resource assignment and the transmission intervalin transmitting the reception quality information using the PUCCH areset by the RRC signaling from the base station apparatus, transmits, tothe base station apparatus, the reception quality information of smallinformation amount in the set resource of the PUCCH and at the settransmission interval. FIG. 9 shows, the mobile station apparatustransmits the reception quality information using the PUCCH at thetransmission interval of five slots.

Next, the operation at #slot3 will be described. At the #slot3, asdescribed in the first embodiment, the base station apparatus transmits,to the mobile station apparatus, the L1/L2 grant including thesimultaneous transmission permission information for instructing themobile station apparatus to simultaneously transmit the uplink data andthe reception quality information. The mobile station apparatus havingreceived the L1/L2 grant including the simultaneous transmissionpermission information from the base station apparatus simultaneouslytransmits the uplink data and the reception quality information of largeinformation amount using the PUSCH. The transmission form of datatransmitted at this time may be controlled by the RRC signalingincluding the physical format for simultaneous transmission from thebase station apparatus similarly to that shown in the first embodiment.

The operation of #slot7 will now be described. The #slot7 indicates thecase where at a slot in which is set so as to transmit the receptionquality information using the PUCCH in advance, further the base stationapparatus transmits the L1/L2 grant including the simultaneoustransmission permission information. At #slot7, the mobile stationapparatus having received the L1/L2 grant including the simultaneoustransmission permission information from the base station apparatussimultaneously transmits, to the base station apparatus, the uplink dataand the reception quality information using the PUSCH.

Here, as the reception quality information transmitted simultaneouslywith the uplink data, there can be transmitted the reception qualityinformation of large information amount, or the reception qualityinformation of small information amount attempting to be transmitted onPUCCH and the reception quality information of large information amount,or the reception quality information of small information amountattempting to be transmitted on PUCCH and the relationship thereof. Thereception quality information having small information amount and therelationship thereof indicates the reception quality information havingsmall information amount attempting to be transmitted on PUCCH anddifference information with respect to the reception qualityinformation, etc. Specifically, it indicates that with the average valueof wideband reception quality information as the reception qualityinformation of small information amount, narrow band reception qualityinformation is expressed as the difference information from the averagevalue thereof and is transmitted. For example, in case that there is adesire to transmit four values of 15, 12, 10 and 8 as the receptionquality information, the average value as small information amount isdetermined to be “9”. Moreover, the difference information from theaverage value as “the relationship thereof” is determined to be 6, 3, 1and −1. This information is transmitted simultaneously with the uplinkdata on PUCCH. As stated above, since the difference information of theaverage value can be expressed by lesser number of bits, it is possibleto reduce the number of bits of the reception quality informationtransmitted on the uplink data channel.

Further, the operation of the base station apparatus at #slot7 will bedescribed. When the mobile station apparatus transmits, to the basestation apparatus, the reception quality information of smallinformation amount attempting to be transmitted on PUCCH and thereception quality information of large information amount, or thereception quality information of information amount attempting to betransmitted on PUCCH and the relationship thereof, the resource of thePUCCH which has been set by the RRC signaling in advance does nottransmit any information.

The base station apparatus transmits the L1/L2 grant including thesimultaneous transmission permission information to thereby recognize inadvance that there is no information to be transmitted in the resourceof the PUCCH. For this reason, other mobile station apparatus areperformed scheduling using the resource so as to transmit information ofthe uplink (e.g., ACK/NACK signal).

By performing such scheduling, it is possible to use, with respect toother mobile station apparatus, the resource of the PUCCH which has beenmaintained in advance for transmitting the reception qualityinformation, thus making it possible to more efficiently use the uplinkresource.

At #slot12, there is shown the case where at a slot which the basestation apparatus set by the RRC signaling for the mobile stationapparatus so as to transmit the reception quality information havingsmall information amount using the PUCCH, the base station apparatustransmits the L1/L2 grant which does not include the simultaneoustransmission permission information. The operation at the #slot12 willbe described. At the #slot12, the mobile station apparatus havingreceived the L1/L2 grant which does not include the simultaneoustransmission permission information from the base station apparatussimultaneously transmits, using the PUSCH, the uplink data and thereception quality information of small information attempting to betransmitted on the PUCCH.

At this time, as the physical format for simultaneously transmitting theuplink data and the reception quality information of small informationattempting to be transmitted on the PUCCH to be transmitted using thePUSCH, a format determined in advance is used, or such format iscontrolled by the RRC signaling. Namely, there are defined the physicalformat for simultaneously transmitting the reception quality informationof small information attempting to be transmitted on PUCCH and theuplink data, and the physical format for simultaneously transmitting thereception quality information of large information and the uplink datain case that receiving the L1/L2 grant including the simultaneoustransmission permission information.

Also at #slot12, the base station apparatus transmits the L1/L2 grantwhich does not include the simultaneous transmission permissioninformation to thereby in advance recognized that there is noinformation to be transmitted in the resource of the PUCCH, other mobilestation apparatus are performed scheduling so as to transmit the uplinkinformation, (e.g., ACK/NACK signal) using the resource.

FIG. 10 is a view showing content and form to be transmitted in the slotin the second embodiment according to the present invention. Moreover,FIG. 11 is a sequence chart showing the operation of the secondembodiment according to the present invention. Here, for facilitation ofexplanation, there are shown slots and the sequence corresponding to#slot1 to #slot12 in FIG. 9. In FIG. 10 and FIG. 11, at #slot1, theresource assignment and the transmission interval when the mobilestation apparatus transmits the reception quality information using thePUCCH are set by the RRC signaling from the base station apparatus. At#slot2, the mobile station apparatus transmits the reception qualityinformation of small information amount in the set recourse of the PUCCHand at the set transmission interval (step S41). At #slot3, the basestation apparatus transmits the L1/L2 grant including the simultaneoustransmission permission information (step S42). The mobile stationapparatus having received the signal simultaneously transmits, using thePUSCH, the uplink data and the reception quality information of largeinformation amount (step S43).

At #slot4, the base station apparatus transmits the L1/L2 grant whichdoes not include the simultaneous transmission permission information(step S44). The mobile station apparatus having received the signaltransmits, using the PUSCH, the uplink data (step S45). Also at #slots 8and 10, similar processing is performed (steps S48 to S51).

At #slot7, the base station apparatus transmits the L1/L2 grantincluding the simultaneous transmission permission information (stepS46). The mobile station apparatus having received the signal transmits,using the PUSCH, the uplink data and the reception quality informationof large information amount, or the uplink data and the receptionquality information of small information amount attempting to betransmitted on PUCCH and the reception quality information of largeinformation amount, or the uplink data and the reception qualityinformation of small information amount attempting to be transmitted onPUCCH and the relationship thereof (step S47). In addition, the basestation apparatus performs scheduling so that other mobile stationapparatus can transmit the uplink information using such resource.

At #slot12, the base station apparatus transmits the L1/L2 grant whichdoes not include the simultaneous transmission permission information(step S52). The mobile station apparatus having received the signaltransmits, using the PUSCH, the uplink data and the reception qualityinformation attempting to be transmitted on PUCCH (step S53). Inaddition, the base station apparatus performs scheduling so that othermobile station apparatus can transmit the uplink information using suchresource.

As stated above, according to the second embodiment of the presentinvention, the base station apparatus transmits the RRC signalingincluding the resource and the transmission interval for transmittingthe reception quality information using the PUCCH, and transmits theL1/L2 grant including the simultaneous transmission permissioninformation for permitting simultaneous transmission of the uplink dataand the reception quality information, thereby enabling control of thetransmission frequency of the reception quality information and thetransmission control to flexibly treat the information amount of thereception quality information.

Moreover, since the uplink data and the reception quality informationcan be simultaneously transmitted, it is possible to reduce wasteful useof the resource of the L1/L2 grant. Namely, when a transmissioninstruction of the reception quality information is given at a fixedtiming using the radio resource control signal (RRC signaling) from thebase station apparatus to the mobile station apparatus, if there is aneed to give a transmission instruction of the reception qualityinformation dynamically using the uplink data transmission permissionsignal, it is required to give an instruction at which timing thereception quality information is to be transmitted, using the uplinkdata transmission permission signal from the base station apparatus tothe mobile station apparatus. According to the present invention, sincethe uplink data transmission permission signal including thesimultaneous transmission permission information for instructing themobile station apparatus to simultaneously transmit the receptionquality information and the uplink data is transmitted to the mobilestation apparatus, wasteful use of the resource of the uplink datatransmission permission signal is reduced in the downlink, and therebythe resource can be effectively utilized.

Third Embodiment

FIG. 12 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and thereception quality information transmission form. FIG. 12 shows, as anexample, the operation from #slot1 to #slot24. First, the base stationapparatus transmits, to the mobile station apparatus, the RRC signalingincluding a reception quality information transmittable time region.This reception quality information transmittable time region is a regionwhere the mobile station apparatus having received the L1/L2 grant atany slot within the region can simultaneously transmit the uplink dataand the reception quality information. Thus, there is no necessity toinclude simultaneous transmission permission information in the L1/L2grant to be transmitted from the base station apparatus, thus making itpossible to more efficiently use downlink resource.

FIG. 12 shows that the reception quality information transmittable timeregions are set with respect to slots of #slot1 to #slot4, #slot11 to#slot14 and #slot21 to #slot24 by the RRC signaling from the basestation apparatus. Moreover, it shows that the mobile station apparatussimultaneously transmits the uplink data and the reception qualityinformation with respect to the L1/L2 grant (#slot2, #slot11 and#slot23) first received within the reception quality informationtransmittable time region.

The transmission form when the mobile station apparatus simultaneouslytransmits the uplink data and the reception quality information issimilar to that shown in the first embodiment, and the RRC signalingincluding the physical format for simultaneous transmission may betransmitted from the base station apparatus.

FIG. 13 is a view showing content and form to be transmitted in the slotin the third embodiment according to the present invention. Moreover,FIG. 14 is a sequence chart showing the operation of the thirdembodiment according to the present invention. Here, for facilitation ofexplanation, there are shown slots and the sequence corresponding to#slot1 to #slot12 in FIG. 12.

In FIG. 13 and FIG. 14, at #slot1, the base station apparatus transmits,to the mobile station apparatus, the RRC signaling including thereception quality information transmittable time region (step S60). Themobile station apparatus having received an L1/L2 grant at any slotwithin the time region (step S61) simultaneously transmits the uplinkdata and the reception quality information (step S62). Also at #slot11,similar processing is performed (steps S69, S70). At #slot3, the mobilestation apparatus having received the L1/L2 grant (step S63) transmitsthe uplink data (step S64).

In this example, since it shows that the uplink data and the receptionquality information are simultaneously transmitted with respect to theL1/L2 grant first received with the reception quality informationtransmittable time region, simultaneous transmission is not performed at#slot3. Also at #slot6, #slot7 and #slot12, similar processing isperformed (steps S65 to S68, S71 and S72).

In the third embodiment of the present invention, for facilitation ofexplanation description has been given in connection with the examplewhere the uplink data and the reception quality information aresimultaneously transmitted with respect to the L1/L2 grant firstreceived within the reception quality information transmittable timeregion. However, the reception quality information may be transmitted atany slot within the reception quality information transmittable timeregion.

As described above, according to the third embodiment of the presentinvention, the base station apparatus transmits, to the mobile stationapparatus, the RRC signaling that includes the reception qualityinformation transmittable time region, and the mobile station apparatushaving received the L1/L2 grant within the time region simultaneouslytransmits the uplink data and the reception quality information. Thus,the base station apparatus can control the transmission frequency of thereception quality information and can perform the transmission controlwhich flexibly treats the information amount of the reception qualityinformation. Further, the uplink data and the reception qualityinformation can be simultaneously transmitted, which leads to reductionin wasteful use of the resource of the L1/L2 grant.

Moreover, it is possible to perform, more efficiently, the transmissioncontrol of the reception quality information without adding informationto the L1/L2 grant to be transmitted from the base station apparatus tothe mobile station apparatus. Namely, when a transmission instruction ofthe reception quality information is given at fixed timing using theradio resource control signal (RRC signaling) from the base stationapparatus to the mobile station apparatus, if there is a need to give atransmission instruction of the reception quality informationdynamically using the uplink data transmission permission signal, it isrequired to give an instruction at which timing the reception qualityinformation is to be transmitted, using the uplink data transmissionpermission signal from the base station apparatus to the mobile stationapparatus. According to the present invention, since the uplink datatransmission permission signal including the simultaneous transmissionpermission information for instructing the mobile station apparatus tosimultaneously transmit the reception quality information and the uplinkdata is transmitted to the mobile station apparatus, wasteful use of theresource of the uplink data transmission permission signal is reduced,and thereby the resource can be effectively utilized.

Fourth Embodiment

FIG. 15 is a view showing a control signal transmitted from the basestation apparatus to the mobile station apparatus, and the receptionquality information, the uplink data which are transmitted from themobile station apparatus to the base station apparatus, and receptionquality information transmission form in the fourth embodiment of thepresent invention. In FIG. 15, as an example, there is shown anoperation from #slot1 to #slot24. First, the base station apparatustransmits, to the mobile station apparatus, the RRC signaling whichincludes the resource assignment and the transmission interval when themobile station apparatus transmits the reception quality informationusing the PUCCH, and the reception quality information transmittabletime region.

In FIG. 15, it shows that the reception quality information istransmitted using the PUCCH at the transmission interval of five slots,and to set reception quality information transmittable time region at#slot1 to #slot4, #slot11 to #slot14 and #slot21 to #slot24. Moreover,it shows that the mobile station apparatus simultaneously transmits theuplink data and the reception quality information with respect to theL1/L2 grant (#slot3, #slot12, and #slot23) first received within thereception quality information transmittable time region.

At #slot2, the mobile station apparatus in which the resource assignmentand the transmission interval in transmitting the reception qualityinformation using the PUCCH are set by the RRC signaling from the basestation apparatus transmits, using the PUCCH, the reception qualityinformation of small information amount in the resource of the PUCCH andat the transmission interval determined at that setting.

At #slot3, the mobile station apparatus having received the L1/L2 grantfrom the base station apparatus simultaneously transmits the uplink dataand the reception quality information. While the transmission form insimultaneously transmitting the uplink data and the reception qualityinformation is similar to that shown in the first embodiment, the RRCsignaling including the physical format for simultaneous transmissionmay be transmitted from the base station apparatus.

At #slot7, it is shown that the base station apparatus has transmittedthe L1/L2 grant at a slot which is set so as to transmit the receptionquality information of small information amount using the PUCCH. At the#slot7, the mobile station apparatus having received the L1/L2 grantfrom the base station apparatus simultaneously transmits, using thePUSCH, the uplink data and the reception quality information of smallinformation attempting to be transmitted on PUCCH. At this time, asdescribed in the second embodiment, the base station apparatus transmitsthe L1/L2 grant to thereby recognize in advance that there is noinformation to be transmitted by the resource of the PUCCH, other mobilestation apparatus are performed scheduling so as to transmit the uplinkinformation (e.g., ACK/NACK signal) using the resource.

At #slot12, it is shown that the L1/L2 grant is transmitted within thereception quality information transmittable time region at the slotwhich is set so as to transmit the reception quality information ofsmall information amount using the PUCCH. At the #slot12, the mobilestation apparatus having received the L1/L2 grant from the base stationapparatus simultaneously transmits, using the PUSCH, the uplink data andthe reception quality information. Here, as the reception qualityinformation transmitted simultaneously with the uplink data, asdescribed in the second embodiment, it is possible to transmit thereception quality information of large information amount, the receptionquality information of small information amount and the receptionquality information of large information amount attempting to betransmitted on PUCCH, or the reception quality information of smallinformation amount attempting to be transmitted on PUCCH and therelationship thereof.

FIG. 16 is a view showing content and form to be transmitted in the slotin the fourth embodiment according to the present invention. Moreover,FIG. 17 is a sequence chart showing the operation of the fourthembodiment according to the present invention. Here, for facilitation ofexplanation, there are shown slots and the sequence corresponding to#slot1 to #slot12 in FIG. 15.

In FIG. 16 and FIG. 17, at #slot1, the base station apparatus transmitsthe RRC signaling which includes the resource assignment and thetransmission interval in transmitting the reception quality informationusing the PUCCH, and the reception quality information transmittabletime region (step S80). The mobile station apparatus having received thesignal transmits the reception quality information of small informationamount in the resource of the PUCCH and at the transmission intervaldetermined by the setting (step S81). In addition, in the case ofreceiving the L1/L2 grant at any slot within the reception qualityinformation transmittable time region (step S82), the uplink data andthe reception quality information are simultaneously transmitted (stepS83).

At the #slot2, the mobile station apparatus transmits, using the PUCCH,the reception quality information of small information amount. At#slot3, the base station apparatus transmits the L1/L2 grant (step S82).The mobile station apparatus having received the signal simultaneouslytransmits the uplink data and reception quality information (step S83).At #slot4, the base station apparatus transmits the L1/L2 grant (stepS84). The mobile station apparatus having received the signal transmitsthe uplink data (step S85).

In this example, since it shows that the uplink data and the receptionquality information are transmitted simultaneously with respect to theL1/L2 grant received first within the reception quality informationtransmittable time region, simultaneous transmission is not performed at#slot4. At #slot6 and #slot9 similar processing is performed (steps S86,S87, S90 and S91).

At #slot7, the base station apparatus transmits the L1/L2 grant (stepS88) and the mobile station apparatus having received the signaltransmits, using the PUSCH, the uplink data and the reception qualityinformation of small information amount attempting to be transmitted onthe PUCCH (step S89). In addition, the base station apparatus performsscheduling so that other mobile station apparatus can transmit theuplink information using such resource.

At #slot 12, the base station apparatus transmits the L1/L2 grant (stepS92) and the mobile station apparatus having received the signaltransmits the uplink data and the reception quality information havinglarge information amount, or the uplink data and the reception qualityinformation of small information amount and the reception qualityinformation of large information amount attempting to be transmitted onPUCCH, or the uplink data and the reception quality information of smallinformation amount attempting to be transmitted on PUCCH and therelationship thereof (step S93).

In the fourth embodiment, for facilitation of explanation, descriptionhas been given in connection with the example to simultaneously transmitthe uplink data and the reception quality information with respect tothe L1/L2 grant first received within the reception quality informationtransmittable time region. However, the reception quality informationcan be transmitted at any slot within the reception quality informationtransmittable time region.

As described above, according to the fourth embodiment of the presentinvention, the base station apparatus transmits, to the mobile stationapparatus, the RRC signaling including the resource assignment, thetransmission interval when the mobile station apparatus transmits thereception quality information using the PUCCH, and the reception qualityinformation transmittable time region. The mobile station apparatushaving received the L1/L2 grant within the time region simultaneouslytransmits the uplink data and the reception quality information so thatthe base station apparatus can control the transmission frequency of thereception quality information, and can perform the transmission controlwhich flexibly treats the information amount of the reception qualityinformation.

Further, the uplink data and the reception quality information can betransmitted simultaneously, which leads to reduction of wasteful use ofthe resource of the L1/L2 grant. Namely, when a transmission instructionof the reception quality information is given at a fixed timing usingthe radio resource control signal (RRC signaling) from the base stationapparatus to the mobile station apparatus, if there is a need to give atransmission instruction of the reception quality informationdynamically using the uplink data transmission permission signal, it isrequired to give an instruction at which timing the reception qualityinformation is to be transmitted, using the uplink data transmissionpermission signal from the base station apparatus to the mobile stationapparatus. According to the present invention, since the uplink datatransmission permission signal including the simultaneous transmissionpermission information for instructing the mobile station apparatus tosimultaneously transmit the reception quality information and the uplinkdata is transmitted to the mobile station apparatus, wasteful use of theresource of the uplink data transmission permission signal is reduced inthe downlink, and thereby the resource can be effectively utilized.

In addition, it is possible to perform more efficiently transmissioncontrol of the reception quality information without adding informationto the L1/L2 grant to be transmitted from the base station apparatus tothe mobile apparatus.

While the preferred embodiments of the present invention have beendescribed so far in detail with reference to attached drawings,practical configurations are not limited to these embodiments, designetc., within the range not departing from the gist of the presentinvention may be included within the scope as set forth in patentclaims.

As described above, the mobile communication system of the presentembodiment is directed to a mobile communication system in which themobile station apparatus measures reception quality of a signal receivedfrom the base station apparatus to transmit reception qualityinformation to the base station apparatus wherein the base stationapparatus transmits, to the mobile station apparatus, the uplink datatransmission permission signal including the simultaneous transmissionpermission information for instructing the mobile station apparatus tosimultaneously transmit the reception quality information and the uplinkdata. The mobile station apparatus simultaneously transmits, to the basestation apparatus, the reception quality information and the uplink datain case that receiving, from the base station apparatus, the uplink datatransmission permission signal including the simultaneous transmissionpermission information.

As stated above, the base station apparatus transmits, to the mobilestation apparatus, the uplink data transmission permission signalincluding the simultaneous transmission permission information, and themobile station apparatus simultaneously transmits, to the base stationapparatus, the reception quality information and the uplink data in casethat receiving, from the base station apparatus, the uplink datatransmission permission signal including the simultaneous transmissionpermission information. Accordingly, the base station apparatus cancontrol the transmission frequency of the reception quality information.Moreover, it is possible to perform the transmission control of thereception quality information in consideration of the uplink resourcewithin a cell. Further, when a transmission instruction of the receptionquality information is given at a fixed timing using the radio resourcecontrol signal (RRC signaling) from the base station apparatus to themobile station apparatus, if there is a need to give a transmissioninstruction of the reception quality information dynamically using theuplink data transmission permission signal, it is required to give aninstruction at which timing the reception quality information is to betransmitted, using the uplink data transmission permission signal fromthe base station apparatus to the mobile station apparatus. According tothe present invention, since the uplink data transmission permissionsignal including the simultaneous transmission permission informationfor instructing the mobile station apparatus to simultaneously transmitthe reception quality information and the uplink data is transmitted tothe mobile station apparatus, wasteful use of the resource of the uplinkdata transmission permission signal is reduced in the downlink, andthereby the resource can be effectively utilized.

Moreover, the mobile communication system of the present embodiment isdirected to a mobile communication system in which a mobile stationapparatus measures reception quality of a signal received from the basestation apparatus to transmit reception quality information to the basestation apparatus, wherein the base station apparatus transmits, to themobile station apparatus, the radio resource control signal includinginformation instructing the resource assignment and the transmissioninterval of the reception quality information for the mobile stationapparatus to transmit the reception quality information to the basestation apparatus using the uplink control channel, and then transmits,to the mobile station apparatus, the uplink data transmission permissionsignal including the simultaneous transmission permission informationfor instructing the mobile station apparatus to simultaneously transmitthe reception quality information and the uplink data. The mobilestation apparatus periodically transmits, to the base station apparatus,the reception quality information using the uplink control channelaccording to the instruction included in the radio resource controlsignal transmitted from the base station apparatus, and simultaneouslytransmits, to the base station apparatus, the reception qualityinformation and the uplink data using the uplink data channel in casethat receiving, from the base station apparatus, the uplink datatransmission permission signal including the simultaneous transmissionpermission information.

As stated above, the base station apparatus transmits, to the mobilestation apparatus, the radio resource control signal includinginformation instructing the resource assignment and the transmissioninterval of the reception quality information for the mobile stationapparatus to transmit the reception quality information to the basestation apparatus using the uplink control channel, and then transmits,to the mobile station apparatus, the uplink data transmission permissionsignal including the simultaneous transmission permission information.Accordingly, it is possible to control the transmission frequency of thereception quality information. Moreover, it is possible to properly usethe uplink control channel and the uplink data channel in transmittingthe reception quality information. Accordingly, it becomes possible toperform the transmission control which flexibly treats the informationamount of the reception quality information. Further, when atransmission instruction of the reception quality information is givenat a fixed timing using the radio resource control signal (RRCsignaling) from the base station apparatus to the mobile stationapparatus, if there is a need to give a transmission instruction of thereception quality information dynamically using the uplink datatransmission permission signal, it is required to give an instruction atwhich timing the reception quality information is to be transmitted,using the uplink data transmission permission signal from the basestation apparatus to the mobile station apparatus. According to thepresent invention, since the uplink data transmission permission signalincluding the simultaneous transmission permission information forinstructing the mobile station apparatus to simultaneously transmit thereception quality information and the uplink data is transmitted to themobile station apparatus, wasteful use of the resource of the uplinkdata transmission permission signal is reduced in the downlink, andthereby the resource can be effectively utilized.

Moreover, in the mobile communication system of the present embodiment,in case that the base station apparatus transmits, to the mobile stationapparatus, the uplink data transmission permission signal including thesimultaneous transmission permission information at a slot of thedownlink corresponding to a slot of the uplink in advance instructed byusing the radio resource control information for the mobile stationapparatus so as to transmit the reception quality information using theuplink control channel, and the mobile station apparatus receives, fromthe base station apparatus, the uplink data transmission permissionsignal including the simultaneous transmission permission information,the mobile station apparatus simultaneously transmits, to the basestation apparatus, the reception quality information and the uplink datausing the uplink data channel.

As stated above, the mobile station apparatus periodically transmits, tothe base station apparatus, the reception quality information using theuplink control channel at a slot of the uplink that the base stationapparatus in advance instructed by using the radio resource controlinformation for the mobile station apparatus so as to transmit thereception quality information using the uplink control channel. At theslot of the downlink corresponding to the slot of the uplink, the basestation apparatus transmits, to the mobile station apparatus, the uplinkdata transmission permission signal including the simultaneoustransmission permission information, and in case that the mobile stationapparatus receives the uplink data transmission permission signalincluding the simultaneous transmission permission information, themobile station apparatus simultaneously transmits, to the base stationapparatus, the reception quality information and the uplink data usingthe uplink data channel. With this configuration, since the base stationapparatus transmits the uplink data transmission permission signalincluding the simultaneous transmission permission information to themobile station apparatus, it is possible to control the transmissionfrequency of the reception quality information. Moreover, it is possibleto properly use the uplink control channel and the uplink data channelin transmitting the reception quality information. Accordingly, itbecomes possible to perform the transmission control which flexiblytreats the information amount of the reception quality information. Inaddition, the mobile station apparatus can simultaneously transmit, tothe base station apparatus, the reception quality information and theuplink data using the uplink data channel. Accordingly, the resource ofthe uplink control channel at that time becomes empty. For this reasonthe base station apparatus can perform scheduling so that other mobilestation apparatus can use the resource of emptied uplink controlchannel. Thus, it becomes possible to more efficiently use the uplinkresource.

Moreover, the mobile communication system of the present embodiment isdirected to a mobile communication system in which a mobile stationapparatus measures reception quality of a signal received from a basestation to transmit the reception quality information to the basestation apparatus wherein the base station apparatus transmits, to themobile station apparatus, the radio resource control signal includinginformation for setting the reception quality information transmittabletime during which the mobile station apparatus can simultaneouslytransmit the reception quality information and the uplink data to themobile station apparatus. Then, the base station apparatus transmits theuplink data transmission permission signal to the mobile stationapparatus, and when the mobile station apparatus receives, from the basestation apparatus, the uplink data transmission permission signal withinthe set reception quality information transmittable time, the mobilestation apparatus simultaneously transmits the reception qualityinformation and the uplink data to the base station apparatus.

As stated above, when the base station apparatus transmits the radioresource control signal including information for setting the receptionquality information transmittable time to the mobile apparatus and thentransmits the uplink data transmission permission signal to the mobilestation apparatus, and the mobile station apparatus receives, from thebase station apparatus, the uplink data transmission permission signalwithin the reception quality information transmittable time, since themobile station apparatus simultaneously transmits the reception qualityinformation and the uplink data to the base station apparatus, the basestation apparatus can control the transmission frequency of thereception quality information. Moreover, since there is no need to addthe simultaneous transmission permission information which instructs themobile station apparatus to simultaneously transmit the receptionquality information and the uplink data, in the uplink data transmissionpermission signal transmitted from the base station apparatus to themobile station apparatus, it is possible to more efficiently perform thetransmission control of the reception quality information. Further, whena transmission instruction of the reception quality information is givenat a fixed timing using the radio resource control signal (RRCsignaling) from the base station apparatus to the mobile stationapparatus, if there is a need to give a transmission instruction of thereception quality information dynamically using the uplink datatransmission permission signal, it is required to give an instruction atwhich timing the reception quality information is to be transmitted,using the uplink data transmission permission signal from the basestation apparatus to the mobile station apparatus. According to thepresent invention, since the uplink data transmission permission signalincluding the simultaneous transmission permission information forinstructing the mobile station apparatus to simultaneously transmit thereception quality information and the uplink data is transmitted to themobile station apparatus, wasteful use of the resource of the uplinkdata transmission permission signal is reduced in the downlink, andthereby the resource can be effectively utilized.

In addition, the mobile communication system of the present embodimentis directed to a mobile communication system in which a mobile stationapparatus measures reception quality of a signal received from the basestation apparatus to transmit reception quality information to the basestation apparatus, wherein the base station apparatus transmits, to themobile station apparatus, the radio resource control signal includinginformation instructing the resource assignment and the transmissioninterval of the reception quality information for the mobile stationapparatus to transmit the reception quality information using the uplinkcontrol channel, and information for setting the reception qualityinformation transmittable time during which the mobile station apparatuscan simultaneously transmit the reception quality information and theuplink data, and then transmits the uplink data transmission permissionsignal to the mobile station apparatus. The mobile station apparatusperiodically transmits, to the base station apparatus, the receptionquality information using the uplink control channel according to theinstruction included in the radio resource control signal transmittedfrom the base station apparatus, and simultaneously transmits, to thebase station apparatus, the reception quality information and the uplinkdata using the uplink data channel.

As stated above, the base station apparatus transmits, to the mobilestation apparatus, the radio resource control signal includinginformation instructing the resource assignment and the transmissioninterval of the reception quality information for the mobile stationapparatus to transmit the reception quality information using the uplinkcontrol channel, and information for setting the reception qualityinformation transmittable time during which the mobile station apparatuscan simultaneously transmit the reception quality information and theuplink data, and then transmits the uplink data transmission permissionsignal to the mobile station apparatus. The mobile station apparatussimultaneously transmits, to the base station apparatus, the receptionquality information and the uplink data in case that receiving, from thebase station apparatus, the uplink data transmission permission signalwithin the reception quality information transmittable time.Accordingly, the base station apparatus can control the transmissionfrequency of the reception quality information. Moreover, it is notrequired to add the simultaneous transmission permission information forinstructing the mobile station apparatus to simultaneously transmit thereception quality information and the uplink data in the uplink datatransmission permission signal transmitted from the base stationapparatus to the mobile station apparatus. Accordingly, it is possibleto more efficiently perform the transmission control of the receptionquality information. Further, when a transmission instruction of thereception quality information is given at a fixed timing using the radioresource control signal (RRC signaling) from the base station apparatusto the mobile station apparatus, if there is a need to give atransmission instruction of the reception quality informationdynamically using the uplink data transmission permission signal, it isrequired to give an instruction at which timing the reception qualityinformation is to be transmitted, using the uplink data transmissionpermission signal from the base station apparatus to the mobile stationapparatus. According to the present invention, since the uplink datatransmission permission signal including the simultaneous transmissionpermission information for instructing the mobile station apparatus tosimultaneously transmit the reception quality information and the uplinkdata is transmitted to the mobile station apparatus, wasteful use of theresource of the uplink data transmission permission signal is reduced inthe downlink, and thereby the resource can be effectively utilized.

In addition, in the mobile communication system of the presentembodiment, in case that the base station apparatus transmits, to themobile station apparatus, the uplink data transmission permission signalat a slot of the downlink corresponding to a slot of the uplink inadvance instructed by using the radio resource control information forthe mobile station apparatus so as to transmit the reception qualityinformation using the uplink control channel, and the mobile stationapparatus receives, from the base station apparatus, the uplink datatransmission permission signal, the mobile station apparatussimultaneously transmits, to the base station apparatus, the receptionquality information and the uplink data using the uplink data channel.

As stated above, the mobile station apparatus periodically transmits, tothe base station apparatus, the reception quality information using theuplink control channel at a slot of the uplink in advance instructed byusing the radio resource control information for the mobile stationapparatus so as to transmit reception quality information using theuplink control channel. At the slot of the downlink corresponding to theslot of the uplink, the base station apparatus transmits, to the mobilestation apparatus, the uplink data transmission permission signalincluding the simultaneous transmission permission information, and themobile station apparatus simultaneously transmits, to the base stationapparatus, the reception quality information and the uplink data usingthe uplink data channel. With this configuration, since the base stationapparatus transmits the uplink data transmission permission signalincluding the simultaneous transmission permission information to themobile station apparatus, it is possible to control the transmissionfrequency of the reception quality information. Moreover, since it ispossible to properly use the uplink control channel and the uplink datachannel in transmitting the reception quality information, it becomespossible to perform the transmission control which flexibly treats theinformation amount of the reception quality information. Further, sincethe mobile station apparatus simultaneously transmits, to the basestation apparatus, the reception quality information and the uplink datausing the uplink data channel, the resource of the uplink controlchannel at that time becomes empty. For this reason, the base stationapparatus can perform scheduling so that other mobile station apparatuscan use the resource of empty uplink control channel. Thus, it becomespossible to more efficiently use the uplink resource.

Moreover, in the mobile communication system of the present embodiment,the base station apparatus transmits, to the mobile station apparatus,the radio resource control signal including information for specifyingthe physical format when the mobile station apparatus simultaneouslytransmits the reception quality information and the uplink data, and themobile station apparatus simultaneously transmits, to the base stationapparatus, the reception quality information and the uplink dataaccording to the specified physical format.

As stated above, since the base station apparatus transmits, to themobile station apparatus, the radio resource control signal includinginformation for specifying the physical format when the mobile stationapparatus simultaneously transmits the reception quality information andthe uplink data, it becomes possible to control, on the base stationapparatus side, the physical format when the mobile station apparatussimultaneously transmits the reception quality information and theuplink data.

Further, the base station apparatus of the present embodiment isdirected to a base station apparatus for controlling transmissionoperation of reception quality information with respect to the mobilestation apparatus, and includes: a scheduler unit that receives thesimultaneous transmission permission information for instructing themobile station apparatus to simultaneously transmit the receptionquality information and the uplink data generated by the mobile stationapparatus, and the uplink data transmission permission signal, andperforms scheduling to include the simultaneous transmission permissioninformation into the uplink data transmission permission signal; and atransmission unit for transmitting, to the mobile station apparatus, theuplink data transmission permission signal including the simultaneoustransmission permission information.

As stated above, since the base station apparatus of the presentembodiment transmits the uplink data transmission permission signalincluding the simultaneous transmission permission information to themobile station apparatus, it is possible to control the transmissionfrequency of the reception quality information on the base stationapparatus side. Moreover, it becomes possible to perform thetransmission control of the reception quality information inconsideration of the uplink resource within a cell.

Further, the base station apparatus of the present embodiment isdirected to a base station apparatus for controlling the transmissionoperation of reception quality information with respect to the mobilestation apparatus, includes: a scheduler unit that receives informationinstructing the resource assignment and the transmission interval of thereception quality information for the mobile station apparatus totransmit the reception quality information using the uplink controlchannel, and the simultaneous transmission permission information forinstructing the mobile station apparatus to simultaneously transmit thereception quality information and the uplink data generated by themobile station apparatus, and the uplink data transmission permissionsignal, performs scheduling to include information for instructing theresource assignment and the transmission interval of the receptionquality information for the mobile station apparatus to the transmitreception quality information using the uplink control channel, into theradio resource control signal, and also performs scheduling to includethe simultaneous transmission permission information into the uplinkdata transmission permission signal; and a transmission unit fortransmitting, to the mobile station apparatus, the uplink datatransmission permission signal including the simultaneous transmissionpermission information after transmitting the radio resource controlsignal to the mobile station apparatus.

As stated above, the base station apparatus of the embodiment transmits,to the mobile station apparatus, the radio resource control signalincluding information instructing the resource assignment and thetransmission interval of the reception quality information for themobile station apparatus to transmit the reception quality informationusing the uplink control channel, and thereafter transmits the uplinkdata transmission permission signal including the simultaneoustransmission permission information to the mobile station apparatus.Accordingly, it is possible to control the transmission frequency of thereception quality information. In addition, since it is possible toproperly use the uplink control channel and the uplink data channel intransmitting the reception quality information, it becomes possible toperform the transmission control which flexibly treats the informationamount of the reception quality information.

In addition, in the base station apparatus of the present embodiment,the scheduler unit performs scheduling for transmitting the uplink datatransmission permission signal including the simultaneous transmissionpermission information to the mobile station apparatus at a slot of thedownlink corresponding to a slot of the uplink in advance instructed byusing the radio resource control information for the mobile stationapparatus so as to transmit reception quality information using theuplink control channel.

As stated above, the base station apparatus of the present embodimentstransmits, to the mobile station apparatus, the uplink data transmissionpermission signal including the simultaneous transmission permissioninformation at a slot of the downlink corresponding to a slot of theuplink. Accordingly, it is possible to control the transmissionfrequency of the reception quality information. Moreover, since it ispossible to properly use the uplink control channel and the uplink datachannel in transmitting the reception quality information, it becomespossible to perform the transmission control which flexibly treats theinformation amount of the reception quality information. Further, sincethe reception quality information and the uplink data are simultaneouslytransmitted to the base station apparatus using the uplink data channelwith respect to the mobile station apparatus, the resource of the uplinkcontrol channel at that time becomes empty. For this reason, the basestation apparatus can perform scheduling so that other mobile stationapparatus can use the resource of empty uplink control channel. Thus, itis possible to more efficiently use the uplink resource.

In addition, the base station apparatus of the present embodiment isdirected to a base station apparatus for controlling transmissionoperation of reception quality information, and includes: a schedulerunit that receives information for setting the reception qualityinformation transmittable time during which the mobile station apparatuscan simultaneously transmit the reception quality information and theuplink data, and the uplink data transmission permission signal, andperforms scheduling to include the information for setting the receptionquality information transmittable time into the radio resource controlsignal; and a transmission unit for transmitting the uplink datatransmission permission signal to the mobile station apparatus aftertransmitting the radio resource control signal.

As stated above, the base station apparatus of the present embodimenttransmits the radio resource control signal including information forsetting the reception quality information transmittable time to themobile station apparatus, and thereafter transmits the uplink datatransmission permission signal to the mobile station apparatus.Accordingly, it is possible to control the transmission frequency of thereception quality information. Further, since it is not required to addthe simultaneous transmission permission information for instructing themobile station apparatus to simultaneously transmit the receptionquality information and the uplink data in the uplink data transmissionpermission signal transmitted from the base station apparatus to themobile station apparatus, it is possible to more efficiently perform thetransmission control of the reception quality information.

Further, the base station apparatus of this embodiment is directed to abase station apparatus for controlling transmission operation ofreception quality information with respect to the mobile stationapparatus, and includes: a scheduler unit that receives firstinformation instructing the resource assignment and the transmissioninterval of the reception quality information for the mobile stationapparatus to transmit the reception quality information using the uplinkcontrol channel, second information for setting the reception qualityinformation transmittable time during which the mobile station apparatuscan simultaneously transmit the reception quality information and theuplink data, and the uplink data transmission permission signal, andperforms scheduling to include the first and second information into theradio resource control signal; and a transmission unit for transmittingthe uplink data transmission permission signal to the mobile stationapparatus after transmitting the radio resource control signal.

As stated above, the base station apparatus of the present embodimenttransmits the radio resource control signal including the first andsecond information to the mobile station apparatus, and thereaftertransmits the uplink data transmission permission signal to the mobilestation apparatus. Accordingly, it is possible to control thetransmission frequency of the reception quality information. Moreover,since it is not required to add the simultaneous transmission permissioninformation for instructing the mobile station apparatus tosimultaneously transmit the reception quality information and the uplinkdata in the uplink data transmission permission signal transmitted fromthe base station apparatus to the mobile station apparatus. Accordingly,it is possible to more efficiently perform the transmission control ofthe reception quality information.

Further, in the base station apparatus of the present embodiment, thescheduler unit performs scheduling for transmitting the uplink datatransmission permission signal to the mobile station apparatus at a slotof the downlink corresponding to a slot of the uplink in advanceinstructed by using the radio resource control information for themobile station apparatus so as to transmit the reception qualityinformation.

According to the base station apparatus of the present embodiment, sincethe uplink data transmission permission signal including thesimultaneous transmission permission information is transmitted to amobile station apparatus, it is possible to control the transmissionfrequency of the reception quality information. Moreover, since it ispossible to properly use the uplink control channel and the uplink datachannel in transmitting the reception quality information, it ispossible to perform the transmission control which flexibly treats theinformation amount of the reception quality information. Further, sincethe mobile station apparatus simultaneously transmits the receptionquality information and the uplink data to the base station apparatus,the resource of the uplink control channel at that time becomes empty.For this reason, the base station apparatus can perform scheduling sothat other mobile station apparatus can use the resource of emptieduplink control channel. Thus, it is possible to more efficiently use theuplink resource.

In addition, in the base station apparatus of the present embodiment,the scheduler unit performs scheduling for including into the radioresource control signal, information for specifying the physical formatwhen the mobile station apparatus simultaneously transmits the receptionquality information and the uplink data, and the transmission unittransmits, to the mobile station apparatus, the radio resource controlsignal including information for specifying the physical format.

As stated above, the base station apparatus of the present embodimenttransmits, to the mobile station apparatus, the radio resource controlsignal including information for specifying the physical format when themobile station apparatus simultaneously transmits the reception qualityinformation and the uplink data. Accordingly, it becomes possible tocontrol, on the base station apparatus side, the physical format whenthe mobile station apparatus simultaneously transmits the receptionquality information and the uplink data.

Moreover, the mobile station apparatus of the present embodiment isdirected to a mobile station apparatus that measures reception qualityof a signal received from a base station apparatus to transmit receptionquality information to the base station apparatus, and includes: areception unit for receiving, from the base station apparatus, theuplink data transmission permission signal including the simultaneoustransmission permission information for giving an instruction tosimultaneously transmit the reception quality information and the uplinkdata; and a transmission unit for simultaneously transmitting, to thebase station apparatus, the reception quality information and the uplinkdata in case that the reception unit receives the uplink datatransmission permission signal including the simultaneous transmissionpermission information.

As stated above, the mobile station apparatus of this embodiment, incase that receiving the uplink data transmission permission signalincluding the simultaneous transmission permission information from thebase station apparatus, simultaneously transmits the reception qualityinformation and the uplink data to the base station apparatus so thatthe transmission frequency of the reception quality information can becontrolled on the base station apparatus side. In addition, it ispossible to perform the transmission control of the reception qualityinformation in consideration of the uplink resource within a cell.

Moreover, the mobile station apparatus of the present embodiment isdirected to a mobile station apparatus that measures reception qualityof a signal received from a base station apparatus to transmit receptionquality information to the base station apparatus, and includes: areception unit for receiving, from the base station apparatus, the radioresource control signal including information instructing the resourceassignment and the transmission interval of the reception qualityinformation for transmitting the reception quality information to thebase station apparatus using the uplink control channel, and thereafterreceiving the uplink data transmission permission signal including thesimultaneous transmission permission information for giving aninstruction to simultaneously transmit the reception quality informationand the uplink data; and a transmission unit for periodicallytransmitting, to the base station apparatus, the reception qualityinformation using the uplink control channel, according to aninstruction included in the radio resource control signal, and forsimultaneously transmitting, in case that the reception unit receives,from the base station apparatus, the uplink data transmission permissionsignal including the simultaneous transmission permission information,the reception quality information and the uplink data using the uplinkdata channel to the base station apparatus.

As stated above, the mobile station apparatus of the present embodiment,after receiving the radio resource control signal including informationinstructing the resource assignment and the transmission interval of thereception quality information for transmitting, to the base stationapparatus, the reception quality information using the uplink controlchannel, receives the uplink data transmission permission signalincluding the simultaneous transmission permission information forgiving an instruction to simultaneously transmit the reception qualityinformation and the uplink data. Accordingly, it is possible to controlthe transmission frequency of the reception quality information on thebase station apparatus side. In addition, since it is possible toproperly use the uplink control channel and the uplink data channel intransmitting the reception quality information, it is possible toperform the transmission control which flexibly treats the informationamount of the reception quality information.

Moreover, in the mobile station apparatus of the present embodiment, thereception unit receives, from the base station apparatus, the uplinkdata transmission permission signal including the simultaneoustransmission permission information at a slot of the downlinkcorresponding to a slot of the uplink which the base station apparatusin advance instructs by using the radio resource control information soas to transmit the reception quality information using the uplinkcontrol channel, the transmission unit simultaneously transmits, to thebase station apparatus, the reception quality information and the uplinkdata using the uplink data channel.

According to the mobile station apparatus of the present embodiment, itis possible to properly use the uplink control channel and the uplinkdata channel in transmitting the reception quality information.Accordingly, it becomes possible to perform the transmission controlwhich flexibly treats the information amount of the reception qualityinformation. Moreover, since the reception quality information and theuplink data are simultaneously transmitted to the base station apparatususing the uplink data channel, the resource of the uplink controlchannel at that time becomes empty. For this reason, the base stationapparatus can perform scheduling so that other mobile station apparatuscan use the resource of empty uplink control channel. Thus, it becomespossible to use the uplink resource more efficiently.

Further, the mobile station apparatus of the present embodiment isdirected to a mobile station apparatus that measures reception qualityof a signal received from a base station apparatus to transmit receptionquality information to the base station apparatus, and includes: areception unit for receiving, from the base station apparatus, the radioresource control signal including information for setting the receptionquality information transmittable time during which the receptionquality information and the uplink data can be simultaneouslytransmitted, and thereafter receiving the uplink data transmissionpermission signal; and a transmission unit for simultaneouslytransmitting, to the base station apparatus, the reception qualityinformation and the uplink data.

As states above, the mobile station apparatus of the present embodiment,in case that receiving the uplink data transmission permission signalfrom the base station apparatus within the reception quality informationtransmittable time, simultaneously transmits the reception qualityinformation and the uplink data to the base station apparatus.Accordingly, it is possible to control the transmission frequency of thereception quality information on the base station apparatus side.Moreover, with this configuration, there is no necessity to add thesimultaneous transmission permission information for instructing themobile station apparatus to simultaneously transmit the receptionquality information and the uplink data in the uplink data transmissionpermission signal to be transmitted from the base station apparatus tothe mobile station apparatus. Accordingly, it is possible to performmore efficiently transmission control of the reception qualityinformation.

In addition, the mobile station apparatus of the present embodiment isdirected to a mobile station apparatus that measures reception qualityof a signal received from a base station apparatus to transmit receptionquality information to the base station apparatus, and includes: areception unit for receiving the radio resource control signal includinginformation instructing the resource assignment and the transmissioninterval of the reception quality information for transmitting thereception quality information using the uplink control channel andinformation for setting the reception quality information transmittabletime during which the reception quality information and the uplink datacan be simultaneously transmitted, and thereafter receiving the uplinkdata transmission permission signal; and a transmission unit forperiodically transmitting, to the base station apparatus, the receptionquality information using the uplink control channel according to theinstruction included in the radio resource control signal, andsimultaneously transmitting, in case that receiving the uplink datatransmission permission signal from the base station apparatus, to thebase station apparatus, the reception quality information and the uplinkdata using the uplink data channel.

As stated above, since the mobile station apparatus of the presentembodiment, in case that receiving the uplink data transmissionpermission signal from a base station apparatus within the receptionquality information transmittable time, simultaneously transmits thereception quality information and the uplink data to the base stationapparatus, it is possible to control the transmission frequency of thereception quality information on the base station apparatus side.Moreover, since there is no need to add the simultaneous transmissionpermission information for instructing the mobile station apparatus tosimultaneously transmit the reception quality information and the uplinkdata in the uplink data transmission permission signal transmitted fromthe base station apparatus to the mobile station apparatus, it ispossible to perform more efficiently transmission control of thereception quality information.

Moreover, in the mobile station apparatus of this embodiment, thereception unit receives the uplink data transmission permission signalfrom the base station apparatus at a slot of the downlink correspondingto a slot of the uplink that the base station apparatus in advanceinstructs by using the radio resource control information so as totransmit the reception quality information using the uplink controlchannel, the transmission unit simultaneously transmits, to the basestation apparatus, the reception quality information and the uplink datausing the uplink data channel.

According to the mobile station apparatus of the present embodiment, itis possible to control the transmission frequency of the receptionquality information on the base station apparatus side. Moreover, sinceit is possible to properly use the uplink control channel and the uplinkdata channel in transmitting the reception quality information, itbecomes possible to perform transmission control which flexibly treatsthe information amount of the reception quality information in the basestation apparatus. Further, since the reception quality information andthe uplink data are simultaneously transmitted to the base stationapparatus using the uplink data channel, the resource of the uplinkcontrol channel at that time becomes empty. For this reason, the basestation apparatus can perform scheduling so that other mobile stationapparatus can use the resource of empty uplink control channel. Thus, itbecomes possible to more efficiently use the uplink resource.

In addition, in the mobile station apparatus of this embodiment, thereception unit receives, from the base station apparatus, the radioresource control signal including information for specifying thephysical format in simultaneously transmitting the reception qualityinformation and the uplink data, and the transmission unitsimultaneously transmits, to the base station apparatus, the receptionquality information and the uplink data according to the specifiedphysical format.

As described above, the mobile station apparatus of the presentembodiment, receives the radio resource control signal includinginformation for specifying the physical format in simultaneouslytransmitting the reception quality information and the uplink data fromthe base station apparatus. Accordingly, it becomes possible to control,on the base station apparatus side, the physical format insimultaneously transmitting the reception quality information and theuplink data.

The invention claimed is:
 1. A mobile communication system in which amobile station apparatus transmits, to a base station apparatus, uplinkdata on a physical uplink shared channel assigned by using a physicaldownlink control channel, the mobile communication system comprising:the base station apparatus configured to: transmit, to the mobilestation apparatus, a radio resource control signal including firstinformation wherein an amount of resources for reception qualityinformation transmitted together with the uplink data on the physicaluplink shared channel is determined based on the first information,transmit on the physical downlink control channel, to the mobile stationapparatus, second information instructing a transmission of thereception quality information on the physical uplink shared channelassigned by using the physical downlink control channel; and the mobilestation apparatus configured to: transmit, to the base stationapparatus, the reception quality information together with the uplinkdata on the physical uplink shared channel assigned by using thephysical downlink control channel in response to the second informationbeing received from the base station apparatus, wherein the amount ofresources for the reception quality information is determined based onthe first information.
 2. A base station apparatus in a mobilecommunication system in which a mobile station apparatus transmits, tothe base station apparatus, uplink data on a physical uplink sharedchannel assigned by using a physical downlink control channel, the basestation apparatus comprising: a transmitting unit configured totransmit, to the mobile station apparatus, a radio resource controlsignal including first information wherein an amount of resources forreception quality information transmitted together with the uplink dataon the physical uplink shared channel is determined based on the firstinformation; and the transmitting unit configured to transmit on thephysical downlink control channel, to the mobile station apparatus,second information instructing a transmission of the reception qualityinformation on the physical uplink shared channel assigned by using thephysical downlink control channel.
 3. A mobile station apparatus in amobile communication system in which the mobile station apparatustransmits, to a base station apparatus, uplink data on a physical uplinkshared channel assigned by using a physical downlink control channel,the mobile station apparatus comprising: a receiving unit configured toreceive, from the base station apparatus, a radio resource controlsignal including first information wherein an amount of resources forreception quality information transmitted together with the uplink dataon the physical uplink shared channel is determined based on the firstinformation, the receiving unit configured to receive on the physicaldownlink control channel, from the base station apparatus, secondinformation instructing a transmission of the reception qualityinformation on the physical uplink shared channel assigned by using thephysical downlink control channel; and a transmitting unit configured totransmit, to the base station apparatus, the reception qualityinformation together with the uplink data on the physical uplink sharedchannel assigned by using the physical downlink control channel inresponse to the second information being received from the base stationapparatus, the amount of resources for the reception quality informationis determined based on the first information received.
 4. The mobilecommunication system according to claim 1, wherein the amount ofresources for the reception quality information is determined based onthe first information and a size of the physical uplink shared channelassigned by using the physical downlink control channel.
 5. The basestation apparatus according to claim 2, wherein the reception qualityinformation of which the transmission is instructed by using the secondinformation is transmitted together with the uplink data on the physicaluplink shared channel, and the amount of resources for the receptionquality information transmitted together with the uplink data on thephysical uplink shared channel is determined based on the firstinformation and a size of the physical uplink shared channel assigned byusing the physical downlink control channel.
 6. The mobile stationapparatus according to claim 3, wherein the amount of resources for thereception quality information is determined based on the firstinformation and a size of the physical uplink shared channel assigned byusing the physical downlink control channel.